git blame not respecting --find-copies-harder ?

git clone git://git.cuci.nl/pike

Both of this "git blame" commands return the same (erroneous) results
at the end of the files (the last lines are older, and are from the old
README file next to it).

git blame README-CVS
git blame --find-copies-harder README-CVS

However, when using git show with and without --find-copies-harder, we
see that git indeed finds the copy with a 76% similarity index.

git show 9eb55816
git show --find-copies-harder 9eb55816

Shouldn't it be expected that blame should also give the same difference
in result with and without that option?

On a related note, it doesn't seem possible to make --find-copies-harder
a default; is that intentional?
-- 
Sincerely,
           Stephen R. van den Berg.

How many weeks are there in a lightyear?